Pressure-regulator.



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/IVI/E/VTOR i k ATTORNEYS rus NORRIS PETERS 50., WKSHINGTON, D. c.

UNITED STATES PATENT OFFICE.

ROBERT M. DIXON, OF EAST ORANGE, NEW JERSEY, ASSIGNOR TO THE SAFETY OAR HEATING & LIGHTING'OOMPANY, A CORPORATION OF NEW JERSEY.

PRESSURE-RE GULATOR.

Specification of Letters Patent.

Patented Feb. 25, 1908.

Application filed June 19, 1906. Serial No. 322.393-

To all whom it may concern:

Be it known that 1, ROBERT M. DIXON, residing at East Orange, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Pressure-Regulators, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to pressure regulators for gas supply systems.

One of the objects thereof is to provide a regulator characterized by increased efficiency.

Another object is to provide a regulator of this type which will control with great accuracy the operation of the valve mechanism in high pressure systems which are subject to relatively great variations of gas pressure.

Other objects will be in part obvious and in part pointed out hereinafter.

The invention accordingly consists in the features of construction, combinations of elements and arrangement of parts which will be exemplified in the embodiment hereinafter set forth, and the scope of the applica tion of which will be indicated in the appended claims.

In the accompanying drawing, wherein is illustrated one of the various embodiments of my invention, Figure 1 is a vertical sectional view of the same; Fig. 2 is a similar view taken on line 22 of Fig. 1; Fig. 3 is a view in elevation of a detail of the construction.

Similar reference characters refer to similar parts throughout the several views of the 1 drawlng.

Before proceeding with a detailed description of the structural features comprising my invention, it may first be noted that my pressure regulator is designed primarily for use in systems wherein relatively high pressures are maintained, as I found that regulators as heretofore constructed are unsuited to such systems owing. to their inability to control the valve mechanism proportionately to the pressure in the system when the same varies within relatively wide limits.

By my invention, which I shall presently more particularly explain, it will be apparent that I have provided a structure which will give a highly accurate control of the valve mechanism in regulators for high pressure systems and, moreover, one capable of controlling such mechanism under all variations of pressure.

Referring now to the drawings, wherein I have illustrated a preferred adaptation of my invention, 1 indicates a casing having a cover portion 2, suitably secured thereon as by means of clamp-screws 3. Between the casing 1 and cover portion 2 is tightly clamped a flexible diaphragm 4 by means of screws 3, said diaphragm forming one wall of the'pressure chamber 5, the other walls of which are constituted by the walls of said casing. In order that diaphragm 4 may be adapted to withstand relatively high pressures, I preferably construct the same of a plurality of layers of flexible material as 6 and 7. Casing 1 is provided with. a gas inlet aperture 8 and a gas outlet aperture 9, said apertures, as shown, being arranged at opposite sides of the casing. Within inlet opening 8 is located a bushing 10 carrying a screen or sieve 11 held in position therein by means of nipple 12 threaded into said bushing. Depending from bushing 10 within pressure chamber 5 and formed integral with said bushing is a valve casing 13 provided with a seat 14, with which coaots a valve 15 extending loosely within said casing and adapted to fit closely against said seat to thereby effect a tight closure against the pressure of gas entering said regulator.

Valve 15 is provided with a pair of laterally-extending pins 16, which pass through openings in the upper ends of rods 17, which rods are connected at their lower ends by a crosspiece 18. Valve 15 has also a knuckle projection 19 extending from its base which is received in a cavity 20 in a lever 21, pivotally connected with the valve casing at 22.

Extended loosely through crosspiece 18 is a screw-threaded member 23 engaging at its upper end a web 24 of lever 21, and interposed between said crosspiece and an adjustable nut 25 threaded on member 23 is a coil spring 26. This spring urges crosspiece 18 in a downward direction and said crosspiece, through rods 17 connected with valve 15, maintains knuckle projection 19 of said valve in engagement with the walls of cavity 20 of lever 21.

Diaphragm 4 is provided with clamping members 27 and 28, secured together by means of a threaded clamp bolt 29 which extends through openings in said diaphragm, and said clamp bolt maintains said members firmly against the diaphragm by means of a threaded nut 30 upon the upper end thereof. Nut 30 is held in fixed position upon bolt 29 by meansof a lock-nut 31. Pivotally connected to clamp bolt 29 are links 32 which are at their lower ends pivotally connected at 33 with the outer end of lever 21.

Upon lever 21, intermediate its length, rests a saddle 34 having a sharpened edge which is received in a recess 35 in said lever whereby the lever may be rocked upon said saddle, and interposed between said saddle and crosspiece 36 of frame 37 secured to the bottom wall of the casing, as by clamp screws 38, are a pair of coil springs 39. These springs normally urge lever 21 through saddle 34downwardly and oppose the upward movement of diaphragm 4. under the pressure of the gas in chamber 5. Springs '39 are guided by bolts 40, which extend downwardly through the frame 37 and are held in fixed positions by means of nuts 41 arranged upon the exterior of the casing.

I have found that by providing the spring construction shown herein intermediate the ends of lever 21 the opening and closing movements of the valve'under the varying pressures in the regulator are made proportional to such varying pressures, and espec iall y in this the case when the pressure of gas in a high pressure system varies within relatively wide limits. It will accordingly be seen that I have provided a pressure regulator well adapted to attain the objects of my invention, and others not herein mentioned; and it will be further apparent that, as many changes could be made in the above construction and many apparently widely different embodiments of my invention couldbe made without departing from the scope thereof, I intend that all matter contained in the above description or shown in the accompanying drawing shall be interpreted as illustrative and not in a limiting sense.

Having described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In a pressure regulator, in combination, a pressure chamber provided with a flexible diaphragm and having gas inlet and outlet openings, a valve casing .in the inlet opening, a valve located within said valve casing, a lever pivotally connected with said valve and adapted to control the movements thereof, said valve being pivotally supported at one end within said chamber and having its opposite end pivotally connected with said diaphragm, a saddle resting upon said lever intermediate its ends, and resilient means interposed between said saddle and a member fixed within said casing, said resilient means being adapted through said saddle and lever to yieldingly oppose a movement of said diaphragm under the influence of the pressure of gas in said chamber.

2. In a pressure regulator, in combination, a pressure chamber'provided with a flexible diaphragm and having gas inlet and outlet openings, a valve casing in the inlet opening t ereof adapted to a seat in said valve casing, a lever pivotally mounted upon said valve casing and having an operative connection with said lever whereby the opening and closing movements of the same are controlled thereby, means for connecting the outer end of said lever with said diaphragm, a saddle resting upon said lever intermediate its ends and upon which said lever rocks, a frame fixed within said casing, and a pair of resilient members interposed between said saddle and said frame adapted to yieldingly oppose a movement of said lever when said diaphragm is distended under pressure of gas in said chamber.

3. In a pressure regulator, in combination,

a pressure chamber provided with a flexible diaphragm and having gas inlet and outlet openings, a valve casing in .the gas inlet opening, a valve adapted to a seat in said valve casing, a lever pivoted in said valve casing and having an operative connection with said valve, a link pivotally connected with said lever, said link having a pivotal connection with said diaphragm, a saddle resting upon said lever intermediate its ends and upon which said lever is adapted to rock, a frame fixed within said casing, a pair of resilient members interposed between said saddle and said frame adapted to yieldingly oppose a movement of said lever when said diaphragm is distended under pressure of gas in said chamber, and guiding means for said resilient members.

4. In a pressure regulator, in combination, a pressure chamber having gas inlet and outlet openings, a valve adapted to a seat in said inletopening, a lever pivoted within said chamber and having an operative connection with said valve, a flexible diaphragm forming a wall of said chamber and con nected with said lever, said diaphragm through said lever being adapted to control said valve, a saddle resting upon said lever intermediate its length, a frame fixed within said chamber and extending about said saddle, and a pair of springs interposed between said saddle and a portion of said frame adapted to yieldingly oppose a movement of said diaphragm when the same has a tendency to become distended under the in fluence of gas pressure in said chamber.

5. In a pressure regulator, in combination, a pressure chamber having gas inlet and outlet openings, a valve adapted to seat in said inlet opening, a lever pivoted within said chamber having an operative connection with said valve, a flexible diaphragm forming one wall of said chamber and connected with said lever, said diaphragm through said lever being adapted to control the opening and closing operations of said valve, a saddle resting upon said lever intermediate its length and upon which said lever is adapted to rock, a frame fixed Within said casing and extending about said saddle, a pair of coil springs interposed between said saddle and a portionof said frame adapted to yieldingly 10 oppose a movement of said diaphragm when the same has atendency to become distended under the influence of the gas pressure in said chamber, and guiding means positioned Within said springs.

In testimony whereof I afliX my signature, 15

in the presence of tWo Witnesses,

ROBERT M. DIXON. Witnesses:

G. R. JEWETT, E. E. ALLBEE. 

